Her music sucks - she can't sing or write, and her fans think she's wonderful - and she herself thinks so, too.
This doesn't warrant death threats, but bullying comes with the territory of fame, sister. Ain't it a *****?
I've told her myself, in the most polite, adult terms I could fathom, that she cannot sing, her songwriting is terrible, and her fans are dipshits. I understand that she has dreams and refuses to give up, but I can't respect that because I honestly think she should.
TL;DR:
She's not only bad, she's completely delusional about her talent(lack thereof), and that infuriates people, including me. I don't understand who the fuck she thinks she is cruising around, horded by fans and a fucking entourage when she has no talent - her singing voice is grating, her songwriting is hilarious and she's just... not... good.